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H. H. LINDEMUTH. STEAM GENERATOR. No. 398,267. l Patented Peb. 19, 1889.*

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Patented Feb. 19, 1889.,

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STEAM GENERATOR (No Model.

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UNTTED STATES PATENT @FFTCFW .HARRY ll. LINDEN U TH, OF MOUNT JOY, ASSIGNOR OF ONEellAl/F TO PETER 4L. KREISS, OF FLORIN, PENNSYLVANIA.

STAVDGNERATR.

SPECIFICATGN forming part of Letters Patent No. 398,267', dated February 19, 1889.

Application filed May 1S, 188%. Serial No. 274,293. (No nlodeld T all whom t may concern: ranged within and bolted or riveted to the Le it known that l, HARRY lil. LINDEMUTH, flue-sheet L, and a dome or crown sheet, O, a citizen of the United Sta-tes, residing' at which is concave-convex, as shown, and has Mount Joy, in the county of Lancaster and its lower edge bolted to the inner side of the 55 State of Pennsylvania, have .invented a new sheet or shell of the upper end of the latter. and useful Improvement in SteanrGenera.- P represents the boiler sheet or shell, which tors, of which the followingl isa specification. has its lower edge arranged on the flange or My invention relates to an iinprovelnentin loop B at a suitable distaneebeyond and eonsteam-generators; and it Consists in the pecentric with the Iire-boX, a. ring, R, being in- 6o lo enliar construction and combination of deterposedbetween the lowerendsot' the fire-box viees that will be more fully set forth l1ereinand boiler sheet or shell and secured thereto after, 4and rnirtienlarlv pointed out in the by bolts or rivets S. On the outer side of the claim. boiler is a sheet, T, of non-conducting nia- Iu the aeeoinpanying drawings, Fi gure l is terial, and on the outer side of said sheet is a 65 a vertical central sectional view of a gas-bnrn-- easing, of wood, which is secured thereon ing` steam-generator ein bodyiug my improveby means of en circling` bands of brass, iron, nient. Fig. 2 is a horizontal sectional view oi or steel, the saine, taken on the line ,r of Fig. l. V represents the crown-,sheet of the boiler,

A represents the baseeasting, which forms which is formed with a steanrdoine, lV, at its 7o zo a truncated cone, as shown, and is provided center, and above the said crown-sheet at a at its upper edge with an outwardly-extendsuitable dist-aneeis a do1ne,X, a hot-air space in dependin curved flange or lip, B. or ehainber, Y, beingthereby formed between (l represents a cross-bar, which has its ends the dome X and the crown-sheet Y. turned lownwawl to forni lips or lugs and se- Z represents a series of vertical tubular .75

5 cured to dianielirically-opposite sides ol' the fines which extend through and connect the base-casting by ineens of bolts. In the een line-sheet L and the crown-sheet V and arter of the said crossJbar is a eirenlar dependranged eoneentrieally with the gas-chamber M. ing boss and a vertical opening in which is ln the center of the erown-sheetX is an jonrnaled a depending spindle, D,ofagrate,E. opening, i for the attachment of a pipe or 8o 3o F represents a grate-fra1ne which is annu- `flue for the products of Combustion.

lar in shape an d inclines downward and in* Brepresents a steam-escape pipe, which e\'- ward and has its upper edge resting` in the tends downward through the Crown-sheets X upper end of the base-casting' A. Said grateand V, is then extended inward horizontally .frame is provided with a series of depending nearly to the center of the boiler, and has S5 lugs, G, whieh are bolted to the castingA, and its inner end extended upward under the eenis Afurther provided at suitable regular dister of the deine W and to within a slight distanees with vertical slots H, the function of tance thereof. which is to admit air to the firebox. A wa1er-supplypipe, (.l, ironununieates with p l representsthe tire-box, which is eylind rica] one side of the boiler near its base, and eir- 9o 4o or ove-l in shape, as may be lneferred, and enlaliing-pipes 1) E commun ieafle with the is arranged above the grate-frame, has its base and upper end of the boiler, iespeetH lower edge restinl thereon, and is provided ively, and are adapted to be connected the with a door, K, through which fuel may be one to the radiating-coils, (not shown,) to eolsupplied to the lire. To the upper portion of leet the waters of coiulensation, andthe other 5 the shell of the fire-box, which is made of to the safetv-valve and steam -gag'e (Not boiler-inni, Ais bolted or riveted the lower ed ge shown.)

of a [lue-sheet, L, which extends inward over The operation of my invention is as follows: the fire-box and partly covers the saine and is The gases arising from the burning fuel in then turned upward, as shown. the rire-box pass upward into the gas-ehainroo 5o M. represents a gas-Chamber, which eo1n ber M, strike against the dome thereof, and prises a sheet, N, having its lower end ar are deflected downward along` the sides of the gas-chamber, and are tl iusheld above the {irebox and exposed to the ercest heat until the gases and all of vthe combustible matter are consumed. The heat and incombustible material pass from the gas-chamber M upward through the dues Z Vinto the hot-air chamber Y, and from thence escape through the opening A in the form oli' a colorless vapor, all of the smoke having been consumed. The water in the boiler entirely surrounds the fire-box, the gas-chamber, and the lines Z, and is thereby heated by direct contact therewith, so as to cause steam to be generated with a minimum expenditure of fuel, as will be readily seen. The crown of the gas-chamber causes the water which is immediately over the same to be heated very intensely, and the steam arising from the heated water is collected in the steam-dome \V and is superheated by reason of the heating-chamber Y above the said dome. From the steam-dome the steam escapes throngl'i the pipe l. Inasinuch as the upper end of said pipe is arranged in proximity to the said dome, steam is taken. at a point in the steam-dome where' it is hottest and driest.

A steam-generator thus Constructed is especially adapted for use lin supplying steamheating coils in building, but may be ein- Vployed for running engines and other purposes.

Having thus described my invention, I claim- A steam-generator having a fire-box, I, the crown-sheet L of which has an upright flange around its central opening, the heated gasehamber having its lower edge bolted within and to each flange of the crown-sheet and closed at top, the water chamber or boiler from its base up rising above the same and having its top formed by the flue-sheet V, provided at its center with the integral steamdome IV, the lues Z, extending between the crown-sheet and Hue-sheet, the chamber Y, to receive the products of. combustion from the said fines surrounding the steam-dome and discharging vertically above the saine, so that there will be a constant passage of hot gases thereover, and the pipe B, receivingr steam downward at its inner end from the central upper part of the steam-dome, passing thence downward into the boiler and horizontally therein, and thence extending upward through the top of the chamber Y at one side, substantially as specified.

In testimony that I claim the foregoing as iny own I have hereto afliXed my signature in presence of two witnesses. Y

HARRY H. LINDEM-UTH. Witnesses:

A. Z. MYERS, J. LINDEMUTH. 

